<template>
    <div :style='style' class='top-right-btn'>
        <el-row>
            <el-tooltip
                v-if='search'
                :content="showSearch ? '隐藏搜索' : '显示搜索'"
                class='item'
                effect='dark'
                placement='top'
            >
                <el-button circle icon='Search' @click='toggleSearch()' />
            </el-tooltip>
            <el-tooltip class='item' content='刷新' effect='dark' placement='top'>
                <el-button circle icon='Refresh' @click='refresh()' />
            </el-tooltip>
            <el-tooltip v-if='columns' class='item' content='显隐列' effect='dark' placement='top'>
                <el-button circle icon='Menu' @click='showColumn()' />
            </el-tooltip>
        </el-row>
        <el-dialog v-model='open' :title='title' append-to-body>
            <el-transfer
                v-model='value'
                :data='columns'
                :titles="['显示', '隐藏']"
                @change='dataChange'
            ></el-transfer>
        </el-dialog>
    </div>
</template>

<script lang='ts' setup>
import { computed, ref } from 'vue';

const props = defineProps({
    showSearch: {
        type: Boolean,
        default: true
    },
    columns: {
        type: Array as () => Array<any>
    },
    search: {
        type: Boolean,
        default: true
    },
    gutter: {
        type: Number,
        default: 10
    }
});

const emits = defineEmits(['update:showSearch', 'queryTable']);

// 显隐数据
const value = ref<any[]>([]);
// 弹出层标题
const title = ref('显示/隐藏');
// 是否显示弹出层
const open = ref(false);

const style = computed(() => {
    const ret: any = {};
    if (props.gutter) {
        ret.marginRight = `${props.gutter / 2}px`;
    }
    return ret;
});

// 搜索
function toggleSearch() {
    emits('update:showSearch', !props.showSearch);
}

// 刷新
function refresh() {
    emits('queryTable');
}

// 右侧列表元素变化
function dataChange(data: any) {
    for (let item in props.columns) {
        const key = props.columns[item as any].key;
        // eslint-disable-next-line vue/no-mutating-props
        props.columns[item as any].visible = !data.includes(key);
    }
}

// 打开显隐列dialog
function showColumn() {
    open.value = true;
}

// 显隐列初始默认隐藏列
for (let item in props.columns) {
    if (props.columns[item as any].visible === false) {
        value.value.push(parseInt(item));
    }
}
</script>

<style lang='scss' scoped>
:deep(.el-transfer__button) {
    border-radius: 50%;
    display: block;
    margin-left: 0px;
}

:deep(.el-transfer__button:first-child) {
    margin-bottom: 10px;
}

.my-el-transfer {
    text-align: center;
}
</style>
